第四代b'夸克衰變

The Fourth Generation b' Quark Decay

陳興國(Shing-Kuo Chen)

指導教授 ： 侯維恕

國立臺灣大學/理學院/物理研究所/碩士(2008年)

https://doi.org/10.6342/NTU.2008.02641

摘要

無資料

關鍵字

第四代 ； 重夸克 ； 衰變率 ； 弱交互作用 ； 寬度效應

並列摘要

This thesis is to discuss the 4th generation b′ quark decay to verify whether the 4th generation exists or not. We want to find other simple approximation to replace the complicated 5-body in the different specific b′ mass regions. First, we describe the weak interaction, which the b′ quark gets involved in, and we compare the difference between in the Standard Model and the four generation frame. Second, we write down our result of the decay width calculation and introduce another method to calculate the decay width. Finally, we compare the different decay modes with the 5-body decay in the different b′ mass, and conclude that in the different b′ mass region we can approximate the 5-body decay with simple decay modes.

並列關鍵字

the fourth generation ； heavy quark ； decay rate ； weak interaction ； width effect

參考文獻

F. Halzen, A. D. Martin.

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[5] Quarks and leptons: an introductory course in modern particle physics/

[7] Collider Physics/ Vernon D. Barger, J.N. Roger.